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Hach-Lange BUHLER 1027 2000 User Manual

Page 56

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Operation

Page 56

Manual Bühler 1027

Troubleshooting – vacuum system



If a fault develops in your sampler, we can only provide prompt assistance if you give us the type and
serial number of the apparatus concerned. You will find these data on the type plate.
The more precise your description of the fault is, the better our fault diagnosis will be.

Symptom

Possible cause

Action

Electrodes do not react,
system flooded

Adjustment of conductivity too
low. Distilled water has been
used as sample medium.

Contact service department

No contact to electrodes

Check cable connection

Sampler does not extract
samples

System is leaking

Check whether all hoses and
connections are tight

Pump/diaphragm defective

Check pressure/vacuum of
pump

Metering vessel not tight, no
vacuum

Check whether metering vessel
is tight (screw cap)

Filling level electrodes bridged

Clean electrodes

Valve system/pinch valve does
not function correctly

Check valve system/pinch valve
or contact service department

No pressure / vacuum at
pump

Defective diaphragm

Renew diaphragm

Hoses are squeezed

Check hoses